Unable to log in to Nextcloud app

[tatokis]

When OpenLinkWith is set as the default browser, I am unable to log in to the Nextcloud app.

In the normal login flow, after entering the address of my Nextcloud server in the app, it opens a web browser asking me to log in.
What seems to happen is it opens a URL with https://my-nextcloud.tld/login/v2/flow/reallylongrandomstring which then redirects to https://my-nextcloud.tld/login/v2/flow?user=&direct=0.

With OpenLinkWith set as the default browser, it opens the actual browser directly to https://my-nextcloud.tld/login/v2/flow?user=&direct=0, which results in

Access denied

Your login token is invalid or has expired

Steps to reproduce:

1. Ensure OpenLinkWith is set as the default browser
2. Open the Nextcloud app and enter your domain
3. Observe the browser opening and showing Access denied.